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A platform for research: civil engineering, architecture and urbanism
Cement-based self-repairing material as well as preparation method and application thereof
The invention relates to a cement-based self-repairing material as well as a preparation method and application thereof, and belongs to the technical field of oil field well cementation. The preparation method of the cement-based self-repairing material comprises the following steps: standing a mixture mainly composed of a polymeric monomer, a cross-linking agent, an initiator and a solvent at a polymerization temperature, so that the polymeric monomer and the cross-linking agent are subjected to a polymerization reaction under the action of the initiator; the polymeric monomer comprises diacetone acrylamide and alkenyl quaternary ammonium salt, and the alkenyl quaternary ammonium salt contains more than two olefinic unsaturated double bonds. The preparation method of the cement-based self-repairing material is simple in process, the prepared cement-based self-repairing material has good alkali resistance and hydrolysis resistance, has good stability in a high-temperature alkaline environment of cement paste, and can be subjected to a decrosslinking reaction under the action of calcium ions, so that the water absorption capacity of the material is improved, and the service life of the material is prolonged. And self-repairing of the cement stone micro-crack in the presence of water is realized.
本发明涉及一种水泥基自修复材料及其制备方法和应用，属于油田固井技术领域。本发明的水泥基自修复材料的制备方法，包括以下步骤：将主要由聚合单体、交联剂、引发剂和溶剂组成的混合物在聚合温度下静置，使聚合单体、交联剂在引发剂的作用下进行聚合反应；所述聚合单体包括双丙酮丙烯酰胺和烯基季铵盐，所述烯基季铵盐中含有两个以上烯属不饱和双键。本发明的水泥基自修复材料的制备方法，工艺简单，制备的水泥基自修复材料具有良好的耐碱、耐水解能力，在水泥浆高温碱性环境中具有良好的稳定性，并且在钙离子的作用下，会发生解交联反应，提高材料的吸水倍数，实现水泥石微裂缝的遇水自修复。
Cement-based self-repairing material as well as preparation method and application thereof
The invention relates to a cement-based self-repairing material as well as a preparation method and application thereof, and belongs to the technical field of oil field well cementation. The preparation method of the cement-based self-repairing material comprises the following steps: standing a mixture mainly composed of a polymeric monomer, a cross-linking agent, an initiator and a solvent at a polymerization temperature, so that the polymeric monomer and the cross-linking agent are subjected to a polymerization reaction under the action of the initiator; the polymeric monomer comprises diacetone acrylamide and alkenyl quaternary ammonium salt, and the alkenyl quaternary ammonium salt contains more than two olefinic unsaturated double bonds. The preparation method of the cement-based self-repairing material is simple in process, the prepared cement-based self-repairing material has good alkali resistance and hydrolysis resistance, has good stability in a high-temperature alkaline environment of cement paste, and can be subjected to a decrosslinking reaction under the action of calcium ions, so that the water absorption capacity of the material is improved, and the service life of the material is prolonged. And self-repairing of the cement stone micro-crack in the presence of water is realized.
本发明涉及一种水泥基自修复材料及其制备方法和应用，属于油田固井技术领域。本发明的水泥基自修复材料的制备方法，包括以下步骤：将主要由聚合单体、交联剂、引发剂和溶剂组成的混合物在聚合温度下静置，使聚合单体、交联剂在引发剂的作用下进行聚合反应；所述聚合单体包括双丙酮丙烯酰胺和烯基季铵盐，所述烯基季铵盐中含有两个以上烯属不饱和双键。本发明的水泥基自修复材料的制备方法，工艺简单，制备的水泥基自修复材料具有良好的耐碱、耐水解能力，在水泥浆高温碱性环境中具有良好的稳定性，并且在钙离子的作用下，会发生解交联反应，提高材料的吸水倍数，实现水泥石微裂缝的遇水自修复。
Cement-based self-repairing material as well as preparation method and application thereof
一种水泥基自修复材料及其制备方法和应用
MENG WEIDONG (author) / ZHAO LIN (author) / WANG HAIJUAN (author) / YANG JUNHU (author) / TONG JICHANG (author) / LIANG GUOJIN (author)
2023-09-22
Patent
Electronic Resource
Chinese
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